Machine for bending horseshoe-blanks



F. nonne ze e. s. Leone. Machine for Bending Horseshoe Blanks No.242,535. Paeemed lun-e 7.1881.

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lF.1OLUB 8v C. S. LOCK. Machine for Ben-ding Horseshoe Blanks.

No. 242,535. Patented June 7, 188i.

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IINirnn STATES PATENT Orifice.

FRANK HOLUB AND CHARLES S. LOCKE, OF CHICAGO, ILLINOIS.

MACHINE FOR BENDING HORSESHOE-BLANKS.

SPECIFICATION forming part of Letters Patent No. 242,535, dated June 7,1881.

Application filed September 20, 1880. (Nov model.)

To all whom it may concern Be it known that we, FRANK HOLUB and CHARLESS. LocKE, of Chicago, in the county of Cook and State ot' Illinois, haveinvente-d certain new and useful Improvements in Machines for BendingHorseshoeBlan ks, of which the following is a specification.

In forming horseshoe-blanks by machinery the toe-calk is usually formediiush with the front side of the blank, so that when the blank isbentthe front ot' the toe-cal k is curved and is ush with the curvedfrontend of the shoe, and is thus unlike hand-made shoes, the toecalksof which are usually straight.

It is the object of our. invention to bend a machine-made horseshoe-blauk, and in the process of bending to straighten up the toe-calk and swageit a little back from the front edge of the bent blank, as shown in Fig.9, as if it were made by hand. Our machine is capable of so bending theblank and shaping the toecalk, when the blank is formed with the toecalkHush with its front side, as above stated; but we have devised amachine, for which we have made application for Letters Patent, forforming a horseshoe-blank with its toe-calk a little back of the frontedge of the blank, as shown in Fig. 8, and that is thef sort of blank weparticularly contemplate bending and swaging in the present machine.

In the accompanying drawings, which illustrate our invention, Figure lis a plan view. Fig. 2 is also a plan view of one end of the machine,showing the bending-jaws and bending-die in a different position. Fig. 3is a side elevation. Fig. 4 is a longitudinal central see tion on theline 4 4 of Fig. l. Fig. 5 is a transverse'section on the linef5 5 ofFig. l. Fig. 6 is a transverse section on the line 6 6 of Fig. l. Fig. 7is a perspective view of the under side of the bending-die. Fig. 8 is aplan view of the blank, and Fig. 9 is a plan view of the bent blank.

A indicates the bed of the machine, which may be supported in anysuitable solid framework. Within the center of this bed is areciprocating plunger, B, working in suitable guideways, C, and carryingupon its outer end a bending-die, D, and a toe-calk-swaging die,

E. This plunger is actuated by mea-ns of the heavy crank-shaft F and thepitman Gr, to which motion may be given by any suitable prime mover.

H II indicate bel'lding-jaws, the function of which is to partiallyclose around the bending-die, clamping the horseshoe-blank, which isforced between them by the plunger. rIhese jaws are pivoted at I I, andprovided with guide-pins K K, which project beneath them into suitableguide-slots in the table. They are also provided with friction-rollers LL, which bear against the horscshoe-blankin the process of bending.

M M indicate friction-rollers on the outside of the jaws, against whichbear the sliding cams N N, actuated by the rods or bars O O, which arereciprocated at proper intervals by cams P P upon the maindriving-shaft.

Q, indicates a liXed but adjustable die or plunger, coincident with thecalk-swagin g die E. This plunger is made adjustable by means oftheheavy set-screws, (clearly shown in Figs. 1,2, and 4 of the drawings,)as will be understood without further explanation.

The operation of our machine is as follows: Assuming the bending-jaws tobe open and the bending-die D to be retracted, as shown in Fig. l, theblank is placed in position before the jaws and in front of thebending-die, as clearly shown in Fig. l. A half-revolution of thedriving-shaft will force the blank between the dies and curve it aroundthe bending-die, its heel portions being last bent by the abrupt actionof the sliding cams N N at the same instant that the calk is swaged bythe last part of the forward thrust of the plunger. As the rotation ot'the driving-shaft continues the bending-die carrying the bent blank willbe retracted, thejaws opened, and as the die comes over the open spacein the center of the table into the position shown in Fig. 1 the shoewill drop 0H into any suitable receptacle; or, if any difficulty isfound in releasing it by gravity, any ordinary appliance for picking itoff from the die may be employed. conformation exhibited in Fig. 9, thetoe-calk being straight and not flush with the front The finished bentblank will have the A edge of' the shoe, as is usual withmaehinetoe-calk-swaging die E and the adjustable made benthorseshoe-blanks, but: being like a plunger Q, substantially asdescribed.

hand-made blank. FRANK HOLUB.

Having thus described our invention, what CHARLES S. LOUKE. 5 We claimas new, und desire to secure by Let- VitneSSeS:

ters Patent, is- CHARLES W. STAEHLE,

The bending-die D, in combination with the GEO. VHITTIER.

